LTC4416EMS#PBF - 36V Dual PowerPath OR Controller | Analog Devices
MPN: LTC4416EMS#PBF ✓ NakahandaLTC4416EMS#PBF Ulas
An ideal-diode OR controller is a power management IC that drives external MOSFETs to emulate diode behavior with far lower forward voltage drop than a Schottky diode. In the system hierarchy of power path management (ORing controller -> PowerPath controller -> power management IC), the LTC4416 replaces lossy diode-OR topologies, extending battery life and reducing self-heating in high-current rails.
Key features include near-zero forward drop (limited only by MOSFET RDS(ON)), a soft switchover function that transfers between two dissimilar supply voltages without excessive output droop, and a fast-on feature that dramatically increases gate drive current when the forward input falls, minimizing output disturbance during source transitions.
Architecturally, the two controllers are interconnected so that the part can perform source selection as well as simple ORing: it can steer load current between two power sources rather than merely sharing it, enabling priority-based power architectures such as auxiliary input takeover of a wall adapter.
Typical applications include 12V and 24V industrial supply ORing, high-power PoE and telecom power systems (the LTC4416-1 variant targets large-PFET PoE designs), battery backup switchover, and hot-standby redundant rails in servers and networking equipment.
Design consideration: because gate drive is proportional to the applied voltage, verify that the selected P-channel MOSFETs meet both the 36V maximum gate-source rating and the total gate charge the controller must switch during fast-on events.
This page synthesizes distributor pricing, same-family drop-in variants, and practical design guidance not found in the manufacturer datasheet. Pricing as of 2026-10-19.
Mga alternatibo na pwedeng ilagay na LTC4416EMS#PBF — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
Variante sa Seri na ito
Katulad na modelo sa serye na katugma sa pagpasok LTC4416EMS#PBF (parehas na form factor at footprint) — pagkakaiba sa Function, Package, RoHS Status, Number of Channels.
LTC4416EMS-1#PBF
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →LTC4416IMS#PBF
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →LTC4416EMS#PBF Mga Spesipikasyon
| Fungsi | Dual PowerPath / ideal diode OR controller |
| Hanay ng Voltage ng Input | 3.5 V to 36 V |
| Number of Controllers | 2 (interconnected) |
| Source Selector Configuration | 2:1 (P-channel MOSFET control) |
| External Power Switch | P-channel MOSFET |
| Switchover Control | Soft-off switchover plus fast-on gate drive |
| Packhaging | MSOP-10 |
| Bilang ng Pins | 10 |
| Uri ng Pagpapasok | Surface Mount |
| Lead Free | Yes (#PBF suffix) |
| Tindminan RoHS | Compliant |
| Manufacturer Part Family | LTC4416 / LTC4416-1 |
Gabay sa Pin Configuration ng LTC4416EMS#PBF msop-10
Pin configuration para sa LTC4416EMS#PBF (msop-10 package). Ang pagnunumero ng pin, mga function, at connection diagram ay tinukoy sa datasheet ng manufacturer. Sumangguni dito para sa eksaktong footprint at mga alituntunin sa soldering.
Wala ng detalyadong pinout data na magagamit para sa LTC4416EMS#PBF.
Sumangguni sa datasheet para sa buong pin configuration.
Tipikal na mga Gamit
LTC4416EMS#PBF ay nararapat para sa 6 aplikasyons: Industrial 12V/24V Supply ORing, Battery Backup Switchover, PoE and Telecom Power Systems, Server and Networking Redundant Rails, Solar and Renewable Input Combining, Test and Measurement Instrumentation Power.
Industrial 12V/24V Supply ORing
In industrial control cabinets and factory automation systems, the LTC4416EMS#PBF ORs a primary 24V supply with a secondary or battery-backed rail using external P-channel MOSFETs rated at 30V to 40V. Its 3.5V to 36V input window covers both 12V and 24V buses directly with transient headroom. Because the MOSFET forward drop is only ILOAD x RDS(ON) rather than the 0.4V-plus drop of Schottky diodes, a 5A rail loses millivolts instead of watts, eliminating heatsinks on the ORing elements. The soft switchover function transfers between dissimilar voltages without excessive output droop, which is essential when PLCs and sensor hubs cannot tolerate even brief brownouts during source transitions.
Inirekomenda
Battery Backup Switchover
The LTC4416EMS#PBF is well suited to battery backup circuits where a wall adapter normally powers the load and a battery takes over seamlessly on adapter failure. The controller senses reverse current through the MOSFETs and pulls the gate to isolate the failed source, while the fast-on feature increases gate drive current to bring the backup MOSFET into conduction rapidly, minimizing VDROOP on the output. Because the controller consumes minimal power relative to the switched load, standby drain stays low, extending battery life. Near-ideal diode behavior also means the battery is not partially discharged through a leaky diode during normal adapter operation, a common failure mode in diode-OR backup designs.
Inirekomenda
PoE and Telecom Power Systems
Telecom infrastructure and PoE powered devices operate at intermediate bus voltages where the LTC4416 family excels; the LTC4416-1 variant is specifically characterized for large PFETs in these 36V-class systems. The LTC4416EMS#PBF drives the high gate charge of large P-channel MOSFETs, and its fast-on feature limits output sag when the forward input collapses. In -48V telecom distribution or PoE PD front ends, ORing efficiency directly affects thermal design: replacing two Schottky diodes at 3A with MOSFETs controlled by this device can save roughly 2W to 3W of dissipation, reducing heatsink size and improving enclosure reliability. The 10-pin MSOP conserves board area on densely packed line cards.
Inirekomenda
Server and Networking Redundant Rails
Server, storage, and networking equipment commonly employ N+1 redundant power feeds ORed at the point of load. The LTC4416EMS#PBF provides two interconnected controllers so that two MOSFET sets can be steered in a coordinated priority scheme, ensuring the higher-priority source carries the load while the standby source remains isolated until needed. Its soft switchover prevents output undershoot when a PSU output begins to sag, giving downstream DC-DC converters an uneventful ride-through. Low forward drop across the MOSFETs reduces waste heat inside chassis with restricted airflow, and status signaling per datasheet typical applications lets system management firmware log source transitions for predictive maintenance.
Inirekomenda
Solar and Renewable Input Combining
Off-grid and IoT systems frequently combine a solar panel input with a battery or auxiliary DC source. The LTC4416EMS#PBF steers the load to whichever source can supply it, with the soft switchover function managing transfers between dissimilar voltages such as a varying panel output and a regulated battery rail. The 36V input rating accommodates 12V-class panels Voc with cold-temperature margin. Near-ideal diode MOSFET control prevents reverse current from draining the battery back into a dark panel at night, a function a simple diode-OR performs only with persistent conduction loss. Low controller overhead preserves harvested energy in small, solar-powered sensor nodes and remote telemetry installations.
Inirekomenda
Test and Measurement Instrumentation Power
Bench instruments and portable measurement devices benefit from the LTC4416EMS#PBF when switching between AC adapter and internal battery operation. The 3.5V to 36V input window and 2:1 source selection let the instrument prefer the adapter automatically while holding the battery in reserve with no reverse leakage. The soft switchover keeps precision analog front ends and ADC references undisturbed during transfers, which matters because even brief droop can reset calibration state or corrupt an acquisition. Package-level efficiency gains from MOSFET-based ORing reduce internal temperature rise, improving measurement stability, since voltage references and precision amplifiers drift with junction temperature.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for LTC4416EMS#PBF — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | LTC4416EMS-1#PBF | LTC4416IMS#PBF |
|---|---|---|---|
| Package | MSOP-10 | MSOP-10 - same | MSOP-10 - same |
| Brand | Analog Devices | Analog Devices | Analog Devices |
| Input Voltage Range | 3.5 V to 36 V | 3.5 V to 36 V | 3.5 V to 36 V |
| Configuration | 2:1 OR controller / source selector | 2:2 OR controller | 2:1 OR controller |
| External Switch Type | P-channel MOSFET | P-channel MOSFET | P-channel MOSFET |
| Soft Switchover / Fast-On | Yes / Yes | Yes / Yes | Yes / Yes |
| Temperature Grade | Commercial (E grade) | Commercial (E grade) | Industrial (I grade) |
Pangunahing mga Pagkakaiba
- Interconnected dual controllers enable prioritized source selection, not just diode ORing (kumpara saLTC4416EMS-1#PBF)
- Soft switchover minimizes output droop during transfers between dissimilar voltages (kumpara saLTC4416EMS-1#PBF)
- Industrial temperature option available in the identical footprint (kumpara saLTC4416IMS#PBF)
Talaan ng Disenyo
Select P-channel MOSFETs whose VDS rating is at least 40V to match the LTC4416's 36V input ceiling with margin, and whose VGS(th) and RDS(ON) are specified at the gate drive the LTC4416 provides. Total gate charge determines transition speed during the fast-on event; a MOSFET with excessive QG will slow switchover and increase output droop. For a 5A rail, a MOSFET with 10mOhm RDS(ON) dissipates only 0.25W versus roughly 2W for a Schottky diode at 0.4V forward drop. Estimated from I^2*R arithmetic: (5A)^2 x 0.010 Ohm = 0.25W.
Keep the SENSE-to-MOSFET kelvin connections short and routed directly to the MOSFET drain/source pads so the controller measures true forward voltage, not PCB trace drop. Gate traces should be short and wide to minimize ringing during fast-on gate discharge events; a small series gate resistor (a few ohms) can damp oscillation at the cost of slightly slower switching. Place input and output ceramic bulk capacitance near the common output node so the output rail is stable during source transitions.
Do not confuse the LTC4416 (2:1 configuration) with the LTC4416-1 (2:2 configuration); they share a footprint but differ in controller interconnection, and swapping them changes power source selection behavior. Verify that the input source cannot exceed 36V including transients - a 24V industrial bus with unclamped surges can breach this limit. Finally, the datasheet 4416fa.pdf typical applications show specific MOSFET choices; deviating to much larger PFETs may exceed the controller's gate drive capability during soft switchover.
Impormasyon ng Pagsunod sa Kautusan
#PBF suffix indicates lead-free (Pb-free) construction per Analog Devices naming convention. RoHS compliance inferred from #PBF designation and distributor listings; REACH and halogen-free status not stated in the provided data.
